<template>
    <div>
         <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>数据统计</el-breadcrumb-item>
        <el-breadcrumb-item>数据报表</el-breadcrumb-item>
        </el-breadcrumb>
         <!-- 卡片区域 -->
             
            <el-card>
                 <div id="main" style="width:700px;height:400px;"></div>
            </el-card>
    </div>
</template>

<script>
 import * as echarts from 'echarts';
 import _ from 'lodash';
export default {
        data() {
            return {
             //需要合并的对象
             options: {
                title: {
                    text: '用户来源'
                },
                tooltip: {
                    trigger: 'axis',
                    axisPointer: {
                    type: 'cross',
                    label: {
                        backgroundColor: '#E9EEF3'
                    }
                    }
                },
                grid: {
                    left: '3%',
                    right: '4%',
                    bottom: '3%',
                    containLabel: true
                },
                xAxis: [
                    {
                    boundaryGap: false
                    }
                ],
                yAxis: [
                    {
                    type: 'value'
                    }
                ]
                } 
              }
          },
  
        // 此时页面上的元素已经被渲染完毕了
        async mounted() {
            // 基于准备好的dom，初始化echarts实例
            let myChart = echarts.init(document.getElementById('main'));
             const {data:res} = await this.$http.get('reports/type/1');
                    if(res.meta.status !== 200) return this.$message.error('获取图表数据失败');
              
            // 准备配置项
            const result = _.merge(res.data,this.options);
            // 使用刚指定的配置项和数据显示图表。
                  myChart.setOption(result);
                },
            methods: {
         
            },
}
</script>

<style>

</style>